FBX model vertices positions differ from original model

[Amir.mdv]

Hello. I have an FBX model and loading it is ok but when I use vertices to add points on each vertex they appear somewhere different. It works ok with GLB models but every FBX model dots load with some offset.

Here is my code:

    let pointsGeo = new THREE.BufferGeometry();

    const vertices = [];
    const indecies = [];
    const vertex = new THREE.Vector3();

    const positionAttribute = model.geometry.getAttribute('position');
    for (let vertexIndex = 0; vertexIndex < positionAttribute.count; vertexIndex++) {
        vertex.fromBufferAttribute(positionAttribute, vertexIndex);
        vertices.push(vertex.x, vertex.y, vertex.z);
        indecies.push(vertexIndex);
        verticesCnt++;
    }

    pointsGeo.setAttribute('position', new THREE.Float32BufferAttribute(vertices, 3));
    pointsGeo.setAttribute('index', new THREE.Float32BufferAttribute(indecies, 3));



    let textureLoader = new THREE.TextureLoader();
    let sprite = textureLoader.load(`/images/1.png`);
    let pointOpacity = Math.min(Math.max(500 / verticesCnt, 0.12), 1);;
    const pointsMaterial = new THREE.PointsMaterial({
        size: 18, // / (window.devicePixelRatio || 1),
        sizeAttenuation: false,
        map: sprite,
        transparent: true,
        opacity: pointOpacity,
        blending: THREE.NormalBlending
    });
    pointsMaterial.color.setRGB(.5, 1.0, .5)
        // pointsMaterial.color.setRGB(1, 1, 1);


    let points = new THREE.Points(pointsGeo, pointsMaterial);
    points.geometry.attributes.position.needsUpdate = true;
    points.position.set(0, 0, 0);
    points.rotation.set(0, 0, 0);
    wireframeModel.add(points);

This is my loader code:

        const loader = new FBXLoader();
        loader.load(url, function(object) {
            object.traverse(function(child) {
                if (child.isMesh) {

                    console.log(child);
                    model = child;
                    model.scale.set(1, 1, 1);
                    model.position.set(0, 1, 0);
                    scene.add(model);

                    modelAddLayers(model);
                }
            });

Can anyone tell me what is happening? I tried many things, updating matrix world and other things.

[vielzutun.ch]

@Amir.mdv

Can anyone tell me what is happening?

It looks like model and points use different coordinate systems, with the points’ system rotated by 90° relative to the model’s coordinate system.

Unfortunately you didn’t add an AxesHelper, so I can’t get more specific.

[Amir.mdv]

You’re a genius sir! It just sparked in my mind to copy the position and rotation of the original model and it works now! Thank you!

    let points = new THREE.Points(pointsGeo, pointsMaterial);
    points.geometry.attributes.position.needsUpdate = true;
    points.position.set(0, 0, 0);
    points.rotation.set(0, 0, 0);
    points.position.copy(model.position);
    points.rotation.copy(model.rotation);
    wireframeModel.add(points);

Thanks again for your kind response sir!